Upload
others
View
0
Download
0
Embed Size (px)
Citation preview
Accepted Manuscript
Title: Clinicopathology and treatment of a giant malignantphyllodes tumor of the breast: A case report and literaturereview
Authors: Wayne A. Warner, Vandana Devika Sookdeo,Maurice Fortune, Meenakshi Akhilesh, Chalapathi RaoAdidam Venkata, Wayne Mohammed, CassandraRamkissoon, Dave Harnanan, Lemuel Pran, Ravi Maharaj
PII: S2210-2612(17)30482-0DOI: https://doi.org/10.1016/j.ijscr.2017.09.021Reference: IJSCR 2778
To appear in:
Received date: 26-8-2017Accepted date: 18-9-2017
Please cite this article as: Warner Wayne A, Sookdeo Vandana Devika, FortuneMaurice, Akhilesh Meenakshi, Rao Adidam Venkata Chalapathi, Mohammed Wayne,Ramkissoon Cassandra, Harnanan Dave, Pran Lemuel, Maharaj Ravi.Clinicopathologyand treatment of a giant malignant phyllodes tumor of the breast: A casereport and literature review.International Journal of Surgery Case Reportshttps://doi.org/10.1016/j.ijscr.2017.09.021
This is a PDF file of an unedited manuscript that has been accepted for publication.As a service to our customers we are providing this early version of the manuscript.The manuscript will undergo copyediting, typesetting, and review of the resulting proofbefore it is published in its final form. Please note that during the production processerrors may be discovered which could affect the content, and all legal disclaimers thatapply to the journal pertain.
1
Clinicopathology and Treatment of a Giant Malignant Phyllodes Tumor of the Breast: A Case Report and Literature Review Wayne A. Warner1,2, Vandana Devika Sookdeo3, Maurice Fortuné4, Meenakshi Akhilesh5, Chalapathi Rao Adidam Venkata5, Wayne Mohammed3, Cassandra Ramkissoon3, Dave Harnanan3, Lemuel Pran3 and Ravi Maharaj3 Affiliations 1 Division of Oncology, Siteman Cancer Center, Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, MO 63110, USA 3Department of Clinical Surgical Sciences, 4Department of Radiology, 5Department of Paraclinical Science, University of the West Indies, Eric Williams Medical Sciences
Complex, Champ Fleurs, Trinidad and Tobago
Author email addresses Wayne A. Warner: [email protected] Vandana Devika Sookdeo: [email protected] Maurice Fortuné: [email protected] Meenakshi Akhilesh: [email protected] Chalapathi Rao Adidam Venkata: [email protected] Wayne Mohammed: [email protected] Cassandra Ramkissoon: [email protected] Dave Harnanan: [email protected] Lemuel Pran: [email protected] Ravi Maharaj: [email protected]
Corresponding author Vandana Devika Sookdeo, B.B.A., B.Sc., M.B.B.S., Department of Clinical Surgical Sciences, University of the West Indies, Eric Williams Medical Sciences Complex, Champ Fleurs, Trinidad and Tobago. E-mail: [email protected]
Highlights:
Phyllodes tumors are rare biphasic fibroepithelial neoplasms of breast and are
classified as benign, borderline and malignant.
Resection of the tumor is the preferred treatment, whereas the role of radiation
therapy, and adjuvant chemotherapy are undefined.
Wide excision or mastectomy should be performed with the goal of histological
clear margins.
Axillary nodal dissection is not required.
2
Keywords Malignant phyllodes tumor, Trinidad and Tobago, cancer
Introduction
Phyllodes tumors (PTs) of the breast are circumscribed biphasic fibroepithelial
neoplasms analogous to fibroadenomas[1]. PTs are characterized by a double layered
epithelial component surrounded by a hypercellular mesenchymal component, typically
presenting in leaf-like processes[1]. These tumors are extremely rare, globally
accounting for 0.3% to 1% of all breast tumors and 2.5% of all fibroepithelial tumors of
the breast[2]. They commonly occur in women 35-55 years (median 45 years)[1].
The World Health Organization (WHO) classification schema grades PTs as
benign, borderline, or malignant based on stromal patterns of cellularity, nuclear atypia,
mitotic activity, heterologous stromal differentiation, stromal hypercellularity, cellular
pleomorphism and tumor margin appearance[1]. However, absent clear defining
boundaries for each of these histologic parameters, reliable classification assignment is
challenging[3].
The majority (up to 60%) of PTs are benign[1]. Distant metastases have been
reported in up to 22% of malignant PTs with expansion to nearly all internal organs, in
particular the lung and skeleton[3]. Axillary lymph node metastases are rare. Wide local
excision or mastectomy with appropriate margins is the preferred clinical intervention[4].
We describe the case of a 45-year-old woman who presented to the Eric
Williams Medical Sciences Complex (EWMSC), Champ Fleurs, Trinidad and Tobago
(TT) with swelling of her left breast, which was later confirmed histologically to be a
malignant phyllodes tumor. This case report was prepared according to the Surgical
CAse REport (SCARE) guidelines which provides a framework for accuracy in surgical
case reports[5, 6].
Case presentation
A 45-year-old woman of Trinidad and Tobago nationality and East Indian ancestry,
presented to the emergency room of the Eric Williams Medical Sciences Complex
(EWMSC) with a 3-week history of left breast swelling. She had a body mass index
(BMI) of 31.8 kg/m2, and reported a history of diabetes mellitus type 2 and hypertension.
3
The patient also reported abstinence from smoking and alcohol. She had four children,
with the first birth occurring at 26 years.
She reported that the swelling occurred a few days after being accidentally hit on
the left breast. Examination revealed a hard, nodular 13 x 10 cm mass, with no palpable
axillary lymph nodes. An ultrasound revealed a heterogeneous, mostly hypoechoic
mass with internal vascularity (Figures 1A, and B). A mammogram revealed a
heterogeneously dense breast tissue with a well-defined spherical opacity in the right
upper inner quadrant (Figure 2A). Further, a large mass with lobulated margins
replacing most of the left breast parenchyma along with a few scattered foci of coarse,
punctate and plaque-like calcifications were noted (Figures 2B). These observations
supported a clinical suspicion of phyllodes tumor. Computed tomography (CT) imaging
of the chest revealed a large lobulated soft tissue density mass in the left breast
(Figures 3A, B, and C).
An ultrasound-guided Tru-cut needle biopsy demonstrated features such as high
stromal cellularity with moderate pleomorphism that would support a differential
diagnosis of benign PT (Figure 4). Histopathological examination revealed that the
needle core sections were composed of cellular-stromal spindle cell lesions with
hypocellular areas. The spindle cells showed mild pleomorphism, with few mitosis <5/10
high power field (hpf) and the tumor was devoid of glandular elements or foci of
necrosis. However, because of heterogeneity of the tumor, wider sampling was
considered essential for comprehensive evaluation.
A few weeks later, the patient returned to the hospital complaining of acute pain
around the swelling. After counseling by the case management team, the patient agreed
to have the mass surgically removed by wide excision. In brief, the patient was sterile
prepped, draped and an elliptical incision was made around the affected area leaving 1
cm margins past the involved skin. Hemostasis was achieved using
diathermy coagulation after the excision and a silicone drain was placed in situ. Her
estimated blood loss was 150 ml. The deep tissues and skin were sutured with 2.0 vicryl
and 3.0 prolene (subcuticular stitch looped in the middle), respectively. The operation
was uneventful culminating with the excision of the large mass which was invading the
skin and superior areolar complex. Postoperatively, the patient received divon
4
(Diclofenac), Invanz, Flagyl, an analgesic, and anti-embolism stocking. Ambulation was
encouraged.
A complete mastectomy of the left breast was performed a few weeks later. In
brief, the patient was sterile prepped, draped and Zinacef administered on induction. An
incision made along the elliptical line drawn from the clavicle to the 6th rib to the sternum
to the axillary tail. The breast was removed with deep margins including pectoralis
fascia. Hemostasis was achieved and suturing was as for the prior surgery. Two
silicone drains were placed in situ. Postoperatively, the patient received divon,
Rocephin, an analgesic, and anti-embolism stocking. As before, ambulation was
encouraged.
The excised specimen consisted of a large, firm oval mass partly covered by an
ellipse of skin, measuring 20 x 15 x 10 cm. Cut sections revealed a fleshy grey-white
tumor measuring 19 x 11 x 10 cm with satellite nodules close to the inferior margin.
Histopathological investigations revealed that sections showed marked stromal
cellularity with mild pleomorphism. Additionally, a well circumscribed cellular stromal
tumor containing occasional glandular elements was observed. The epithelial
component in the adjoining tissue and tumor showed ductal and lobular hyperplasia and
focal in situ carcinoma (Figure 5). There were foci of tumor necrosis, mild-moderate
atypia foci of marked cellularity resembling fibrosarcoma with a mitotic index >5/10 hpf
in the active areas (Figure 6). No evidence of lympho-vascular invasions was observed.
The tumor showed a predominately pushing growth pattern (Figure 7). The medial,
superior, and inferior margins were not clear. However, the posterior margin was clear
but showed a breach in the capsule, while the lateral and anterior margins were close
(<3mm) but clear. These histologic features are consistent with the WHO grading for a
malignant phyllodes tumor. Sections from the mastectomy specimen showed
granulomatous inflammatory changes. Residual tumor was not observed in the lesion
and all margins were clear.
At her bimonthly follow up appointment, Tramacet was prescribed to alleviate the
intermittent pain around the incision site. She had an uneventful postoperative course
and ten months later a surveillance CT did not reveal any recurrent or residual mass
(Figure 8).
5
After a three-year absence, the patient returned to the clinic and a surveillance
abdomen/pelvis and chest CT imaging regimen did not reveal any evidence of local
recurrence or residual disease. A technetium 99m (99mTc) hydroxyethylene
diphosphonate (HDP) bone scan with anterior and posterior imaging was negative for
uptake in the lumbar vertebral region which would have been suggestive of metastatic
deposits. Stable disease with stable sclerotic lesions were observed in her lumbar
vertebral bodies.
An exhaustive PubMed/Medline and EMBASE medical database search from
inception (1946) to present was performed. The search strategy was created using
indexing terms/keywords and the AND Boolean operator. For example,
in PubMed: (Caribbean OR Latin America OR developing countries)
AND (phyllodes tumor OR cystosarcoma phylloides). After limiting final retrieval to
English language, humans and case reports, we retrieved one citation for a benign
PT[7]. To the best of our knowledge, ours is the first case report of a malignant PT in
the Caribbean and Latin America. A search of the TT Cancer Registry records revealed
that only 12 (0.003%) of the 4,685 reported breast cancer cases between 1995 and
2009 were phyllodes tumors (Table 1). All of the cases were malignant with most
patients (11/12, 1 unknown) receiving only surgical intervention. The mean age at
presentation was 49.
DISCUSSION
In this case, there was a high degree of suspicion for a benign PT based in part,
on the biopsy findings of few mitoses. However, histopathological examination of the
mass revealed that the mitoses in active areas were >5/10hpf and thus strongly
suggestive of malignant PT. Extensive imaging and histopathological workup is critical
when a diagnosis of PT is suspected[8]. If the mass has a smooth contours, intramural
cysts and low echogenicity on ultrasound, a PT is usually suspected and a core needle
biopsy recommended[9, 10]. In such cases, cytology specimens should contain both
epithelial and stromal elements to confirm the PT diagnosis. However, there is
oftentimes discordance between the core biology pathology and surgical histopathology
6
in rendering a differential diagnosis between the various classifications of PT and
fibroadenoma due to tumor heterogeneity [11, 12].
All of the cases reported to the TT Cancer Registry since 1995 were classified as
malignant. This is striking given that globally most PTs are benign. Distinguishing
between benign, borderline, and malignant PT is critical to the development of an
effective clinical management plan. There is significant variability in the interpretation of
the criteria for each designation. Additionally, tumor heterogeneity, sampling errors
increase reported variabilities. In fact, studies in which different pathologists have
analyzed the same histological slides were marked by a 25% discordance in the final
histopathological finding[13]. One approach to better delineate between benign and a
malignant PT might be to assess the immunohistochemical (IHC) expression of CD10 in
the stromal cells. CD10 immunoreactivity has the potential to inform on the
histopathological grading of PTs, given that CD10 expression strongly correlates with
PT grade[14, 15]. Restaging with 18F-fluorodeoxyglucose positron emission
tomography computed tomography (FDG PET-CT) could also be helpful in
distinguishing between a benign and malignant PT[8]. This hybrid imaging modality
benefits from the sensitivity of the PET component and the specificity of the CT
component. However, it is not available in the Caribbean or most low resource
countries. The challenges of expanding nuclear medicine capacity in low resource
countries were reviewed elsewhere[16, 17]. The addition of FDG PET-CT to the
diagnostic arsenal might be of value in developing countries given the increasing cancer
burden.
While the molecular basis of phyllodes tumors largely remains unknown, the
most frequent genomic insults are mutations in exon 2 of MED12, a subunit of the
transcriptional mediator complex and RARA[18-20]. Interestingly, fibroadenomas also
share this genetic signature[18-20]. Less frequently, mutations in
FLNA, SETD2 and KMT2D have also been reported in PT. Loss of function mutations in
p53, deleterious mutations in Rb1 and NF1, mutations in PIK3CA and ERBB4, and
high-level copy number variations of EGFR were detected in borderline and malignant
tumors[20]. However, EGFR and IGF1R gene amplifications were only detected in
malignant tumors[21, 22]. These mutational signatures of PT provide a possible
7
framework to distinguish between the three subtypes. This type of genome forward
clinical assessment is not available in Trinidad and Tobago and the Caribbean region, in
general. Capacity building towards this level of precision medicine is fiscally challenging
for the region, but is crucial for long term sustainable improvements in health care[23].
Breast-conserving surgery with appropriate margins (≥1cm) is the preferred
primary therapy for PT in the absence of metastatic disease[4]. In this case, given the
histologic confirmation of a malignant tumor, we elected to perform a wide excision in
accordance with National Comprehensive Cancer Network guidelines[24] followed by a
mastectomy. Axillary dissection was not performed since nodal metastases secondary
to PT are very rare. The utility of adjuvant therapy in the management of PT cases is
unclear and there are no prospective or randomized studies of adjuvant chemotherapy
in this setting. Recent reports recommended adjuvant therapy intervention for borderline
cases with maximal diameter greater than 5 cm and those with histologic evidence of
stromal overgrowth, since these seem to have greater metastatic potential[4, 25]. For
metastatic PTs, some studies have reported promising results with administration of
ifosfamide, doxorubicin and dacarbazine[26, 27].
Given the absence of metastasis or recurrence in the chest wall post
mastectomy, radiotherapy was not offered to this patient. In fact, there are no
prospective randomized data in support of radiotherapy for PT[24]. Recent studies
advocate the use of radiotherapy for borderline and malignant PT, recurrent tumors and
in cases where it is not possible to achieve a greater than one-centimeter surgical
margin[25, 28]. Given the rarity of PT, it might be challenging to derive a randomized
controlled trial with adequate sample size.
CONCLUSION
Phyllodes tumors are extremely rare. The major challenge facing clinicians in
developing countries is the availability of clinical resources to adequately distinguish
between fibroadenoma and PT, and where PT is affirmed, to arrive at the appropriate
PT classification. Our experience with this case in TT shows that adequate
8
preoperative workup followed by surgical intervention can result in an improved
prognosis for patients with malignant PT.
Consent
Written informed consent was obtained from the patient for publication of this case
report and accompanying images.
Competing interest
The authors declare that they have no competing interests.
Acknowledgements
WAW was supported by Washington University School of Medicine-St. Louis (Grant
#GSAS/CGFP Fund 94028C). The authors wish to acknowledge the assistance of Kim
Lipsey, Bernard Becker Medical Library, Washington University School of Medicine, St.
Louis, MO, USA and Majorie Lamont-Greene, Trinidad and Tobago Cancer Registry,
Mt. Hope, Trinidad and Tobago. The contents of this manuscript are solely the
responsibility of the authors and do not necessarily represent the views of the affiliated
institutions.
Consent Written informed consent was obtained from the patient for publication of this case report and accompanying images. A copy of the written consent is available for review by the Editor-in-Chief of this journal on request”. Author contribution All of the authors contributed substantially to the overall study concept, data collection, data analysis or interpretation, and writing the paper. sources of funding WAW was supported by Washington University School of Medicine, GSAS/CGFP Fund 94028C. The contents of this manuscript are solely the responsibility of the authors and do not necessarily represent the views of the affiliating institutions. Ethical Approval Ethical approval was not required since patient is de-identified
9
Registration of Research Studies
N/A Patient is de-identified Guarantor Wayne A. Warner: [email protected] Vandana Devika Sookdeo: [email protected] Maurice Fortuné: [email protected] Meenakshi Akhilesh: [email protected] Chalapathi Rao Adidam Venkata: [email protected] Wayne Mohammed: [email protected] Cassandra Ramkissoon: [email protected] Dave Harnanan: [email protected] Lemuel Pran: [email protected] Ravi Maharaj: [email protected] conflicts of interest None to declare.
10
REFERENCES:
1. IARC, World Health Organization Classification of Tumours of the Breast., in World Health Organization Classification of Tumours; vol 4., S. Lakhani, et al., Editors. 2012, IARC: Lyon, France.
2. Bernstein, L., D. Deapen, and R.K. Ross, The descriptive epidemiology of malignant cystosarcoma phyllodes tumors of the breast. Cancer, 1993. 71(10): p. 3020-4.
3. Zhang, Y. and C.G. Kleer, Phyllodes Tumor of the Breast: Histopathologic Features, Differential Diagnosis, and Molecular/Genetic Updates. Arch Pathol Lab Med, 2016. 140(7): p. 665-71.
4. Chaney, A.W., et al., Primary treatment of cystosarcoma phyllodes of the breast. Cancer, 2000. 89(7): p. 1502-11.
5. Agha, R.A., et al., The SCARE Statement: Consensus-based surgical case report guidelines. Int J Surg, 2016. 34: p. 180-186.
6. Agha, R.A., et al., A protocol for the development of reporting criteria for surgical case reports: The SCARE statement. Int J Surg, 2016. 27: p. 187-9.
7. Islam, S., et al., The largest and neglected giant phyllodes tumor of the breast-A case report and literature review. Int J Surg Case Rep, 2016. 26: p. 96-100.
8. Chung, J., et al., Giant phyllodes tumors of the breast: imaging findings with clinicopathological correlation in 14 cases. Clin Imaging, 2011. 35(2): p. 102-7.
9. Buchberger, W., et al., Phylloides tumor: findings on mammography, sonography, and aspiration cytology in 10 cases. AJR Am J Roentgenol, 1991. 157(4): p. 715-9.
10. Umpleby, H.C., et al., An evaluation of the preoperative diagnosis and management of cystosarcoma phyllodes. Ann R Coll Surg Engl, 1989. 71(5): p. 285-8.
11. Chen, W.H., et al., Surgical treatment of phyllodes tumors of the breast: retrospective review of 172 cases. J Surg Oncol, 2005. 91(3): p. 185-94.
12. Komenaka, I.K., et al., Core needle biopsy as a diagnostic tool to differentiate phyllodes tumor from fibroadenoma. Arch Surg, 2003. 138(9): p. 987-90.
13. Parker, S.J. and S.A. Harries, Phyllodes tumours. Postgrad Med J, 2001. 77(909): p. 428-35.
14. Kulkarni, M.M., et al., Role of CD10 Immunoexpression in Grading Phyllodes Tumour of the Breast. J Clin Diagn Res, 2017. 11(1): p. Ec14-ec16.
15. Puri, V., et al., Critical appraisal of stromal CD10 staining in fibroepithelial lesions of breast with a special emphasis on expression patterns and correlation with WHO grading. J Cancer Res Ther, 2016. 12(2): p. 667-70.
16. Paez, D., et al., Current Status of Nuclear Medicine Practice in Latin America and the Caribbean. J Nucl Med, 2015. 56(10): p. 1629-34.
17. Dondi, M., et al., Trends in nuclear medicine in developing countries. J Nucl Med, 2011. 52 Suppl 2: p. 16s-23s.
18. Yoshida, M., et al., Frequent MED12 mutations in phyllodes tumours of the breast. Br J Cancer, 2015. 112(10): p. 1703-8.
19. Nagasawa, S., et al., MED12 exon 2 mutations in phyllodes tumors of the breast. Cancer Med, 2015. 4(7): p. 1117-21.
11
20. Tan, J., et al., Genomic landscapes of breast fibroepithelial tumors. Nat Genet, 2015. 47(11): p. 1341-1345.
21. Cani, A.K., et al., Next-Gen Sequencing Exposes Frequent MED12 Mutations and Actionable Therapeutic Targets in Phyllodes Tumors. Mol Cancer Res, 2015. 13(4): p. 613-9.
22. Kersting, C., et al., Amplifications of the epidermal growth factor receptor gene (egfr) are common in phyllodes tumors of the breast and are associated with tumor progression. Lab Invest, 2006. 86(1): p. 54-61.
23. Roach, A., W.A. Warner, and A.A.M. Llanos, Building capacity for human genetics and genomics research in Trinidad and Tobago. Revista panamericana de salud publica = Pan American journal of public health, 2015. 38(5): p. 425-430.
24. National Comprehensive Cancer Network. NCCN Guidelines Version 2.2017 Phyllodes Tumor. 2017 [cited 2017 April 2017]; Available from: https://www.nccn.org/professionals/physician_gls/pdf/breast.pdf.
25. Ossa, C.A., et al., Phyllodes tumor of the breast: a clinic-pathologic study of 77 cases in a Hispanic cohort. Colomb Med (Cali), 2015. 46(3): p. 104-8.
26. Hawkins, R.E., et al., Ifosfamide is an active drug for chemotherapy of metastatic cystosarcoma phyllodes. Cancer, 1992. 69(9): p. 2271-5.
27. Morales-Vasquez, F., et al., Adjuvant chemotherapy with doxorubicin and dacarbazine has no effect in recurrence-free survival of malignant phyllodes tumors of the breast. Breast J, 2007. 13(6): p. 551-6.
28. Belkacemi, Y., et al., Phyllodes tumor of the breast. Int J Radiat Oncol Biol Phys, 2008. 70(2): p. 492-500.
12
Figure 1. A) Transverse ultrasound image of the left breast demonstrates a heterogeneous, mostly hypoechoic mass (blue arrows), the full extent of which is not demonstrated on the images. B) Transverse ultrasound image of the left breast with color doppler interrogation demonstrates a heterogeneous, mostly hypoechoic mass with internal vascularity (blue arrows), the full extent of the mass is not demonstrated on the images.
Figure 2. Mammogram imaging of the left breast. A). The right craniocaudal view showing heterogeneously dense breast tissue with a fairly well defined spherical opacity in the right upper inner quadrant (blue arrows). B). The left craniocaudal view showing a large mass 13 cm (AP) x 13 cm (TS) with lobulated margins replacing most of the left breast parenchyma (blue arrows). A few scattered foci of coarse, punctate and plaque-like calcifications are seen within the mass centrally (red arrows).
13
Figure 3. Images from a CT chest post IV contrast in the arterial phase and in soft tissue window without significant enhancement post IV contrast administration. A). Axial view. Partially seen in the field of view of the scan is a large lobulated soft tissue density mass in the left breast corresponding to the previously seen mammographic mass (blue arrows). The visualized portion measures 9 cm (AP) x 12 cm (TS). No enlarged axillary or internal mammary lymph nodes seen. B). Coronal image. Partially seen in the field of view of the scan is a large lobulated soft tissue density mass in the left breast corresponding to the previously seen mammographic mass (blue arrows). Few central calcifications were observed (red arrow). The visualized portion measures 12 cm (TS) x 12 cm (Cranial-Caudal, CC). C) Para-sagittal image. Partially seen in the field of view of the scan is a large lobulated soft tissue density mass in the left breast corresponding to the previously seen mammographic mass (blue arrows). The visualized portion measures 9 cm (AP) x 12 cm (CC).
14
Figure 4. Phyllodes tumor biopsy shows marked stromal cellularity with mild pleomorphism (Hematoxylin and eosin, H&E; 20x)
15
Figure 5. Phyllodes tumor. Glandular elements showing duct hyperplasia at the periphery of the tumor (black arrow head). (H&E;10x)
16
Figure 6. Phyllodes tumor. Cellular stroma shows brisk mitoses (black arrow heads). (H&E; 40x)
Figure 7. Tumor showing a pushing growth pattern
17
Figure 8. Selected images of a CT chest post IV contrast in the arterial phase and in soft tissue window. A). Axial view B). Coronal view. C). Sagittal view showing post-surgical changes noted (left mastectomy) with no recurrent/residual masses seen (blue arrow).
18
Table 1. Reported phyllodes tumor of the breast cases in Trinidad and Tobago,1995-2017
*Ethnicity was self-reported. These categories are based on physical observation without any assessment of genetic variants. Indian refers to ancestry from India, South Asia. All patients were nationals of TT.
Ethnicity Age at incidence
Basis of diagnosis
Stage Classification Surgery Chemotherapy Status at last contact
Follow up period
Source
Mixed 42 Histology of primary
Localized Malignant Yes No Alive 1 year TT Cancer Registry
Unknown 40 Histology of primary
Localized Malignant Yes No Alive 2 years TT Cancer Registry
African 57 Histology of primary
Unknown Malignant No No Expired 1 year TT Cancer Registry
Mixed 73 Histology of primary
Regional Malignant Yes No Alive 1 year TT Cancer Registry
Indian 49 Histology of primary
Localized Malignant Yes No Alive 2 years TT Cancer Registry
Unknown 61 Histology of primary
Localized Malignant Yes No Alive 1 year TT Cancer Registry
African 43 Histology of primary
Regional Malignant Yes No Alive 1 year TT Cancer Registry
Indian 54 Histology of primary
Localized Malignant Yes No Alive 1 year TT Cancer Registry
Indian 51 Histology of primary
Unknown Malignant Unknown Unknown Unknown None TT Cancer Registry
Indian 45 Histology of primary
Distant Malignant Yes No Alive 1 year TT Cancer Registry
Mixed 49 Histology of primary
Localized Malignant Yes No Unknown None TT Cancer Registry
Indian 29 Histology of primary
Localized Malignant Yes No Alive 4 years TT Cancer Registry
Indian 44 Histology of primary
- Benign Yes No Expired 6 months post-surgery
[7]
Indian 45 Histology of primary
- Benign Yes No Alive 4 years This case